The answer is simply shockingly poor management from the top of the chain, micro management is rife, keepers are not trusted, even to the point of not being allowed their phones on them which I have never seen in any other zoo before and their opinions doesn’t matter even if they have the relevant experience or knowledge. Moral was very low and probably still is, a very negative environment, this wasn’t too long ago either. The one and only win was they paid slightly more than most other collections.